This Step 1 Phonics Reader can start your child on the road to reading success! A little mouse zooms about changing letters—for example, substituting P for C to change a "cup" into a "pup." A beginning reader rhyming extravaganza that emphasizes initial sound substitution. Step 1 Readers feature big type and easy words for children who know the alphabet and are eager to begin reading. Rhyme and rhythmic text paired with picture clues help children decode the story.